Time travel to the fifties?

I remember my sister watching a movie about a boy who goes back in time to the fifties. For the time he’s there the screen is actually black and white, and he tries to get back to his own time. In the end, he is faced with the choice of staying in the fifties or going back to his life. I have no idea what it was called, I thought it was like Perfectville or something but i can’t find it anywhere and I want to watch it1